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<table width="100%" summary="page for Fingers"><tr><td>Fingers</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Fingers</h2>

<h3>Description</h3>

<p>Fingers
</p>


<h3>Format</h3>

<p>A dataset with 12 observations on the following 3 variables.
</p>

<table summary="Rd table">
<tr>
 <td style="text-align: right;">
    <code>Subject</code> </td><td style="text-align: left;"> <code>I</code>, <code>II</code>, <code>III</code>, or <code>IV</code></td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Drug</code> </td><td style="text-align: left;"> <code>Caffeine</code>, <code>Placebo</code>, or <code>Theobromine</code></td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>TapRate</code> </td><td style="text-align: left;"> Finger taps in a fixed time interval</td>
</tr>
<tr>
 <td style="text-align: right;">
  </td>
</tr>

</table>



<h3>Details</h3>

<p>Scientists Scott and Chen, published
research that compared the effects of caffeine with those of theobromine (a similar chemical
found in chocolate) and with those of a placebo. Their experiment used four human subjects, and
took place over several days. Each day each subject swallowed a tablet containing one of caffeine,
theobromine, or the placebo. Two hours later they were timed while tapping a finger in a specified
manner (that they had practiced earlier, to control for learning effects). The response is the number
of taps in a fixed time interval
</p>


<h3>Source</h3>

<p>The data was found in Statistics in Biology, Vol. 1, by C. I. Bliss (1967), New York: McGraw Hill.
</p>


<h3>References</h3>

<p>1The original article is &quot;Comparison of the action of 1-ethyl theobromine and caffeine in animals and man,&quot; by
C. C. Scott and K. K. Chen, Journal of Pharmacological Experimental Therapy, v. 82 (1944), pp 89-97.
</p>


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